This co-sleeper is great, the only issue I've come across is, although it says 0 to 12 months, by 6 months I don't think my child will be able to sleep in it anymore. But as the title states, it could just be that my baby is longer than average. She's 4 months old, but she's the length of a 7 month old.
We've been using this co-sleeper for about a month now and I'm a big fan. It can turn basically any area into a safe and comfortable sleeping space, which is nice when she stays with the grandparents who do not have a designated nursery (though it is bulky and does not fold up or collapse so it takes up a lot of space when transporting).
-The material is a very soft, cottony, wide waffle weave. They claim it's breathable, and I did press my face into it and was able to still breathe. I don't trust it 100%, but I do like how soft the material is, and so far no pilling or fraying or chemical smell. It's removable for washing, but NOT the easiest to get back on. So if your babe is prone to leaks or blowouts overnight I would put down a disposable changing pad.
-The "mattress" part seems like the perfect balance of firmness while still being comfortable. It is definitely more firm than a normal mattress, but my daughter immediately preferred it to her bassinet, which was like a board. Also I've noticed no breakdown or compression of the foam (granted, she is only 12lbs).
-I think the size will last us for quite a while, if we wanted. My daughter is 2 months right now and has plenty of space. We'll be putting it in her crib when we move her out of our bed, which I think will help the transition immensely.
-The sleeping surface has a 10% grade which they claim is to help with reflux. Personally I could do without this, and I actually bolster the other end to make the whole thing level. If a baby has bad reflux, a 10% incline is not going to help, and overall it's just an unnecessary safety hazard, especially if you're using this with a newborn.
-It does take up quite a bit of room. We have a king bed and put the sleeper between us- it works, but I would definitely not try it with a queen. And I know my husband will be happy when we move her to the crib so he can spread out again (wimp).
But that's it really for cons. Overall I definitely recommend, especially if you are a c section mama like me and getting in and out of bed is a nightmare. My babe and I instantly began sleeping better with this, and considering that sleep becomes your most precious commodity, this sleeper is worth every penny.